coll_xml = """<?xml version="1.0" encoding="utf-8"?>
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            <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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        <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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    <Reference href="http://guardian72.com/rick" bibcode="9999zzz...671...27H">What I did last Epoch</Reference>
    <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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        <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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      <Description>structure formation</Description>
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        <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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sim_xml = """<?xml version="1.0" encoding="utf-8"?>
<Simulation>
  <Name>Sedov</Name>
  <ParentCollection id="/root/Folder">Folder</ParentCollection>
  <Description>A sedov blast test.</Description>
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        <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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    <Reference href="http://guardian72.com/rick" bibcode="9999zzz...671...27H">What I did last Epoch</Reference>
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            <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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        <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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      <Description>structure formation</Description>
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          <Name>Mach</Name>
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            <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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        <Reference href="http://wiggles.com/">The Wiggles: Space Dancing</Reference>
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